The first seven ionisation energies for an element lying between lithium and neon in the Periodic Table are given below. $1310\quad 3390\quad 5320\quad 7450\quad 11000\quad 13300\quad 71000\ \text{kJ mol}^{-1}$ What is the outer electronic configuration of this element?
- A$2s^2$
- B$2s^22p^1$
- C$2s^22p^4$
- D$2s^22p^6$